No addition step to add buddies or friends to Viber before making call.

No buddy list – Viber automatically syncs and highlights friends in iPhone’s address book that have Viber with a Viber logo so that you know who you can call for free.

Uses real phone number for calling – you will know which of your friends have Viber installed once you installed Viber as no different phone number is required.

No registration required – Just install, enter your phone number to receive an SMS text with access code, enter the access code and use.

No ads – Viber doesn’t contain any annoying adds, and does not require in-app purchase.

Free international calls – Viber works virtually anywhere with Internet connection, as long as both parties have Viber installed.

Free with no hidden costs – talk and text (SMS – coming soon) as much as you want without restriction or time limitation over 3G or Wi-Fi.

Any change to a contact will automatically sync and reflect on Viber. In addition, Viber uses iPhone’s contact list without additional buddy list to maintain. The actual real iPhone phone number is used by Viber so that calls can be initiated on current number without the need to save additional number for VoIP calls. The main advantage of Viber is that it’s free and no registration is required, which means no junk mails coming into your mailbox, and no additional user name and password credentials to remember. The calls can be placed over Wi-Fi wireless connection or directly through 3G data connection.

With Viber, iPhone, iPod touch or iPad user can call another iPhone, iPod touch or iPad user for free, whether the recipient is located in same country (local) or overseas (international), and vice versa for receiving call. And indeed, Viber is a very good and convenient VoIP app for iOS-based smartphone device that allows free phone calls between iOS devices with Viber installed over 3G or Wi-Fi. Viber is a new app for iPhone, iPod touch (iTouch) and iPad on the iTunes App Store that intends to revolutionize how calls are made on mobile phone.

Is viber free internationally